The effect of different levels of vitamin A on the anterior pituitary of young bulls.
D000818:Animals; D002417:Cattle; D008297:Male; D010902:Pituitary Gland / Q000032:analysis*; D014801:Vitamin A / Q000097:blood*; D014802:Vitamin A Deficiency / Q000097:blood / Q000662:veterinary*
D014801:Vitamin A